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. 2018 Nov 27;9:1688. doi: 10.3389/fphys.2018.01688

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Copyright © 2018 Rassler, Schwerdtfeger, Aigner and Pfurtscheller.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Examples for respiratory sinus arrhythmia (RSA) (upper part), cessation of RSA (lower part) and relevant parameters: 0i/0e: start of inspiration/expiration; Ttot, breath duration; Ti/Te, inspiration/expiration time; RRImin/RRImax, minima/maxima of RRI curve; Trri-tot, duration of RRI wave; Trri-in/Trri-de, increasing/decreasing flank of RRI waves; RPmin,i/RPmax,i, relative phase of start of inspiration and RRI minima/maxima related to Ti.